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Transcript of TRAINING BULLETIN SCBA August 24, 2010 SCOTT 4.5 · PDF fileTRAINING BULLETIN SCBA August 24,...

  • TRAINING BULLETIN SCBA

    August 24, 2010

    SCOTT 4.5 POSITIVE PRESSURE SELF-CONTAINED BREATHING APPARATUS (SCBA)

    Table of Contents

    Section Subject Page

    1. Introduction ... 1

    2. Limitations... 2

    3. Description... 3

    4. Inspection... 22

    5. Donning and Removal Procedures ... 30

    6. Emergency Procedures ... 33

    7. Communication ... 36

    8. Disinfecting & Cleaning Procedures... 37

    9. Preventive Maintenance / Inventory... 40

    10. Identification... 42

    11. Conclusion... 43

  • T.B. SCBAAugust 24, 2010 SCOTT 4.5 POSITIVE PRESSURE SCBA

    OP

    AN

    B

    C

    DE

    F

    ML

    K J

    G IH

    A Kevlar Head netB FacepieceC RegulatorD Low Pressure HoseE Quick Release Buckle

    1. INTRODUCTION

    F Universal Air ConnectionG High Pressure Coupling H Cylinder Valve & Gauge I Pak-Alert SE 7J Waist Belt

    K Alligator ClipL Remote ConsoleM Indicator LightsN Manual Alert Button O Shoulder StrapsP Quick Connect/Disconnect

    1.1 FDNY currently uses the NFPA 2007 Edition, Scott 4.5 Positive Pressure, Self ContainedBreathing Apparatus (SCBA). This SCBA meets the approval of the National Fire Protection Association (NFPA), Occupational Safety and Health Administration (OSHA) and National Institute for Occupational Safety and Health (NIOSH). Use of the SCBA is regulated by the U.S. Department of Labor Safety and Health Act and together with full firefighting clothing, makes it a part of the framework of firefighters' personal protective equipment.

    1.2 The NFPA 2007 SCBA Standard mandates that all SCBAs must have a visual and audiblelow air alert device. All of the FDNYs SCBAs have a Heads-Up Display (HUD), a Universal Air Connection (UAC), and a Chemical, Biological, Radiation, Nuclear (CBRN) approval. The regulator diaphragm is made of butyl rubber similar to a "Level A" entry suit. The CBRN approval means that the SCBA has met the NIOSH and NFPA criteria for exposure to Liquid Mustard and Sarin Agents. An approved SCBA CBRN regulator can be identified by its orange background label. An approved back frame assembly can be identified by a CDC NIOSH sticker.

    1.3 Members are not fully protected from CBRN agents unless wearing the NFPA 2007compliant SCBA in conjunction with Proper Protective Clothing (e.g., "Level A" entry suit) and proper Haz-Mat training.

    1

  • T.B. SCBAAugust 24, 2010 SCOTT 4.5 POSITIVE PRESSURE SCBA

    2. LIMITATIONS

    2.1 PROTECTION

    2.1.1 The SCBA is designed to protect against an Immediately Dangerous to Life and Health (IDLH) atmosphere.

    2.1.2 The facepiece further protects against entry of contaminants through the eyes.

    2.1.3 Because the facepiece does not cover the ears, airborne contaminants can enter the respiratory tract through a punctured or ruptured eardrum.

    2.1.4 The SCBA does not protect against the absorption of toxic and hazardous substances, or radiation through parts NOT covered by the facepiece.

    2.1.5 The SCBA does not protect against heat exhaustion or exposure to flame or heat.

    2.1.6 The actual working and exit time achieved from an SCBA will vary considerably depending upon physical conditioning, type of work load, physical characteristics, training, and a number of other factors. It is the individuals responsibility to know their work and exit times of the SCBA.

    2.1.7 If a member runs out of air, that member should remove the regulator from the facepiece. The donned facepiece will provide some protection to the skin on the face. Notify Officer and immediately leave the contaminated area. This member MUST be accompanied to a safe area by another member using an SCBA.

    2.2 CONFINED SPACES

    The Code of Federal Regulations 29-CFR 1910.146 defines a confined space as any area that is:

    Not designed for continuous human occupancy; and

    Large enough so a person can enter and work; and Has

    limited means for entry and escape

    2.2.1 Confined spaces include, but are not limited to, basements, sub-basements and cellars, manholes, pits, tunnels, wells, windowless buildings, storage containers, and other spaces that may be oxygen deficient or contain dangerous levels of airborne contaminants.

    2.2.2 All confined spaces are to be considered dangerous until proven otherwise.

    2.2.3 All members entering a confined space shall operate with SCBA donned until the space is deemed safe.

    2.2.4 Members operating in a confined space must work in teams of two or more and maintain contact with each other, in case assistance is needed.

    2

  • T.B. SCBAAugust 24, 2010 SCOTT 4.5 POSITIVE PRESSURE SCBA

    2.2.5 When a member of a rescue team has to leave an area to service an SCBA, this member must be accompanied to a safe area by another member using an SCBA.

    2.3 CONTACT LENSES AND GLASSES

    2.3.1 Contact lenses may be worn with the SCBA.

    2.3.2 When the use of corrective eye lenses is required during SCBA use, the corrective lenses must not interfere with a good seal between face and facepiece. Glasses with temple bars or straps that pass between the face and the seal of the facepiece must not be used. Each size facepiece may be equipped with a lens frame kit. The Department will issue corrective lens kits to members that request them.

    2.4 UNDERWATER USE

    2.4.1 The SCBA is NEVER to be used underwater.

    2.4.2 Submersion in water will render the SCBA inoperative.

    2.4.3 If the SCBA becomes submerged it MUST be placed out of service and returned with a completed service tag (RT-2) stating the problem to the Mask Service Unit.

    3. DESCRIPTION

    3.1 BACKFRAME AND HARNESS ASSEMBLY

    3.1.1 The backframe is the rigid base and back plate to which the Harness Straps and Pressure Reducer Assembly are attached. Its main purpose is to hold the air cylinder. This is done by means of an adjustable cylinder band and a locking tab.

    3.1.2 The harness assembly consists of two adjustable shoulder straps and adjustable waist straps made of Kevlar with a quick release buckle. The shoulder straps have pockets through which the low pressure hose and the remote gauge line pass. The waist belt rests on the hips of the wearer and distributes most of the weight of the SCBA to that area.

    3.2 BREATHING AIR CYLINDER

    3.2.1 Cylinders are constructed of an aluminum shell and wrapped with a fiber composite including neck and bottom, which strengthen and protect the shell.

    3.2.2 Pressurized to 4500psi, the cylinder holds purified breathing air.

    3

  • T.B. SCBAAugust 24, 2010 SCOTT 4.5 POSITIVE PRESSURE SCBA

    Figure 1 Figure 2

    Figure 3 Figure 4

    3.2.3 The Date of Manufacture is listed on the SCOTT label by month and year. The service life of an air cylinder is 15 years. If a manufacture date is greater than 15 years, the cylinder must be removed from service, bled down, tagged, and returned to MSU. (Figure 1)

    3.2.4 Hydrostatic testing is done every 5 years. If the test date shows greater than 5 years, the cylinder must be removed from service, bled down, tagged and returned to MSU. The hydrostatic test date will also be found on the top of the cylinder. For example, the number 102 will indicate that this cylinder was tested in January of 2002, and will need to be retested by January of 2007. (Figure 2)

    A. 10 minute escape cylinders used by Special Operations Command (SOC) unitsfor confined space, need to be hydrostatic tested every 3 years.

    3.2.5 Cylinders that have had a Hydrostatic retest will have a round Hydro Recertified label glued to it, with month and year of retest. (Figure 3)

    4

  • T.B. SCBAAugust 24, 2010 SCOTT 4.5 POSITIVE PRESSURE SCBA

    3.2.6 The SCBA assembly has the capability of accepting 30, 45 or 60 minutecylinders. Since all 4.5 cylinders are pressurized to 4500psi, the differencebetween them is their varying cylinder sizes. The cylinder slide buckle is the only adjustment that must be made when using a different duration cylinder. Each cylinder has a similar hanger to lock onto the backframe. (Figure 4)

    3.2.7 Scott 4.5 NIOSH Rated Service Time Cylinders - The service duration times for30, 45 and 60 minute cylinders are determined by a NIOSH Breathing Machine Test simulating an average adult moderate work rate of 40 liters per minute.

    30 minute cylinder = approximately 1200 liters

    45 minute cylinder = approximately 1800 liters

    60 minute cylinder = approximately 2400 liters

    3.2.8 These are rated durations and the actual time achieved from the cylinder will varyconsiderably. The End of Service Time Indicator (EOSTI) alarms (vibralert and HUD) actuate when approximately 25% of full cylinder pressure remains in the cylinder and valve assembly. The alarms will continue to operate until the cylinder is nearly depleted. It is the individuals responsibility to know their working and exit time of the SCBA.

    3.2.9 The working and exit time of the SCBA will depend on factors such as:

    The degree of physical activity of the user.

    The physical conditioning of the user.

    The degree to which the users breathing is affected by excitement, fear or other emotional factors.

    The degree of training or experience which the user has with this or similar equipment.

    Whether or not the cylinder is fully charged at the start of the work period.

    The atmospheric pressure; for example, if used in a pressurized tunnel or caisson at 2 atmospheres, the duration will be one-half as long as when used at 1 atmosphere; and at 3 atmospheres, will be one-third as long.

    Loose or improperly fitted facepiece.

    The conditio